Process for the expansion of tobacco

Tobacco – Tobacco treatment – Puffing

Patent

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Details

131291, 131900, A24B 318

Patent

active

051727072

ABSTRACT:
A process for the expansion of tobacco, wherein in step (a) the tobacco is cooled by being mixed with cold carbon dioxide; (b) the cooled tobacco is impregnated with liquid carbon dioxide through treatment with gaseous carbon dioxide under a predetermined pressure; (c) the liquid carbon dioxide condensed in the tobacco is converted to solid carbon dioxide through pressure reduction; and (d) the tobacco containing solid carbon dioxide is subjected to a hot gas treatment to achieve the expansion. In step (a) the tobacco is cooled to a temperature of -30.degree. C. to -100.degree. C. through expansion of liquid carbon dioxide and the simultaneous mixing of the tobacco therewith.

REFERENCES:
patent: 4235250 (1980-11-01), Utsch
patent: 4310006 (1982-01-01), Hibbitts et al.
patent: 4336814 (1982-06-01), Sykes et al.
patent: 4431011 (1984-02-01), Rothchild
patent: 4460000 (1984-07-01), Steinberg
patent: 4528994 (1985-07-01), Korte et al.
patent: 4630619 (1986-12-01), Korte et al.

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